초록 ▼

A system for adjusting a phase angle of a recovered data clock signal from a received data signal includes a plurality of counters and a phase state machine. Each counter within the plurality of counters determines a number of samples having a logical one (1) value within a particular portion of a p

A system for adjusting a phase angle of a recovered data clock signal from a received data signal includes a plurality of counters and a phase state machine. Each counter within the plurality of counters determines a number of samples having a logical one (1) value within a particular portion of a period of the received data signal. Each counter then compares the number to a predetermined threshold value. Each counter transmits a signal indicating whether the number of samples having a logical one (1) for each portion of received data signal's period is greater than, is less than, or is equal to the predetermined threshold. The phase state machine receives the signals transmitted by each counter and adjusts the phase angle of the recovered data clock signal based on the signals received from each counter.

대표청구항 ▼

[ I claim:] [1.]1. A system for adjusting a phase angle of a clock signal, comprising:a plurality of counters, each of said plurality of counters configured to determine a number of samples having a particular logical value within a portion of a period of a data signal and configured to transmit a c

[ I claim:] [1.]1. A system for adjusting a phase angle of a clock signal, comprising:a plurality of counters, each of said plurality of counters configured to determine a number of samples having a particular logical value within a portion of a period of a data signal and configured to transmit a comparison signal indicating a comparison of said number to a predetermined threshold value, wherein said each of said plurality of counters corresponds to a different portion of said period, wherein said comparison signal indicates whether said number exceeds said predetermined threshold value, and wherein said number of samples located in said portion of said period corresponds to approximately one-half of a number of samples within said period; anda phase state machine configured to receive said comparison signals from said plurality of counters and to adjust said phase angle of said clock signal based on said comparison signals.